Municipal solid waste is a porous material consisting of a solid skeleton with several components and a pore space.
The material model treats MSW as a composite. Thereby, the solid phase is supposed to consist of a soil-like basic matrix and embedded fibres.
In experiments a particular hardening phenomenon is observed as the friction angle tends to increase at high compression, which is attributed to the reinforcing effect of the fibrous particles in the waste. Time dependent settlements have to be covered as well as anisotropies due to emplacement strategies. An important question is, e.g., to which extent the loss of solid matter is transferred to additional settlement.